Lenticular brackets

Filled brackets for headings.

Also known as: Solid brackets CJK

In Japanese:: 隅付き括弧
In Japanese (Latin):: Sumitsuki kakko
In Chinese:: 方頭括弧

CulturalKeyboard & punctuationStandard profile

Meanings

The East Asian punctuation of solid bracket shapes used for headings and emphasis.

Officially standardisedVerified fact
Enclose headings, labels and emphasised phrases in East Asian text.
Contexts: Language and transcription
Officially standardisedVerified fact
Heavier than the corner brackets and used where Latin typography would use bold, so the bracket weight substitutes for a typeface weight the character set does not reliably have.
Contexts: Language and transcription

Visual description

A pair of thick filled bracket outlines with squared corners, each a bar-like figure filling one character cell.

Symmetry: none
Orientation: upright

Confidence

IdentityHigh confidence: High confidence because the identity is defined by a current official standard, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useHigh confidence: High confidence because the current use is defined by a current official standard, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

East Asian typography, punctuation and reading marks
The Unicode Consortium and East Asian typographic standards bodies · retrieved 2026-08-27
Cited for the identity, encoded form and typographic behaviour of East Asian punctuation and reading marks. Layout requirements differ between Chinese, Japanese and Korean practice and a record names the tradition it describes.

Last reviewed 2026-08-27

Help improve this page

Meanings

The East Asian punctuation of solid bracket shapes used for headings and emphasis.

Officially standardisedVerified fact

Enclose headings, labels and emphasised phrases in East Asian text.

Contexts: Language and transcription

Officially standardisedVerified fact

Heavier than the corner brackets and used where Latin typography would use bold, so the bracket weight substitutes for a typeface weight the character set does not reliably have.

Contexts: Language and transcription

Confidence

IdentityHigh confidence: High confidence because the identity is defined by a current official standard, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useHigh confidence: High confidence because the current use is defined by a current official standard, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

East Asian typography, punctuation and reading marks
The Unicode Consortium and East Asian typographic standards bodies · retrieved 2026-08-27
Cited for the identity, encoded form and typographic behaviour of East Asian punctuation and reading marks. Layout requirements differ between Chinese, Japanese and Korean practice and a record names the tradition it describes.

Last reviewed 2026-08-27